Feature request: allow symlink arrow to be "->" instead of "⇒"

[planet36]

On my system, the rightwards double arrow character is not visually distinctive from a bold hyphen.

Please allow (maybe with an option or env var) the symlink arrow to be "->" instead of "⇒".

[zwpaper]

Add a option for rendering this would be an easy solution, what do u think? @meain

[meain]

Yeah, I have a few concerns though:

• does the flag only affect ⇒ or all future non ascii chars if any
• what should the flag be (--only-ascii ?)
• should the flag be => or -> as some fonts have - rendered below middle

[zwpaper]

@meain actually, there is a more complicated solution in my mind, as u mentioned maybe the flag may effect all chars.

How about we add themes for all those customized requests, like this issue, #333, and the description in README.

we can use a theme file to describe the =>, icons, also colors.

[meain]

Yeah, that sounds good. Config would be a better place for this.

[planet36]

It works great. Thanks!